121745547121 has 8 divisors (see below), whose sum is σ = 132891516000. Its totient is φ = 110612610240.

The previous prime is 121745547023. The next prime is 121745547137.

It is a happy number.

121745547121 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121745547121 - 2¹⁷ = 121745416049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121745547151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3238456 + ... + 3275833.

It is an arithmetic number, because the mean of its divisors is an integer number (16611439500).

Almost surely, 2^121745547121 is an apocalyptic number.

121745547121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121745547121 is a deficient number, since it is larger than the sum of its proper divisors (11145968879).

121745547121 is a wasteful number, since it uses less digits than its factorization.

121745547121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6515999.

The product of its digits is 78400, while the sum is 40.

It can be divided in two parts, 121745 and 547121, that added together give a palindrome (668866).

The spelling of 121745547121 in words is "one hundred twenty-one billion, seven hundred forty-five million, five hundred forty-seven thousand, one hundred twenty-one".